Terms

A query is broken up into terms and operators. There are two types of terms: Single Terms and Phrases.
A Single Term is a single word such as "options" or "tools".
A Phrase is a group of words surrounded by double quotes such as "implied volatility".
Multiple terms can be combined together with Boolean operators (AND/OR) to form a more complex query (see below).

Boolean operators

Boolean operators allow terms to be combined through logic operators. Search supports AND, "+", OR, NOT and "-" as Boolean operators(Note: Boolean operators must be ALL CAPS).
The OR operator is the default conjunction operator. This means that if there is no Boolean operator between two terms, the OR operator is used. The OR operator links two terms and finds a matching document if either of the terms exist in a document. This is equivalent to a union using sets. The symbol || can be used in place of the word OR.
To search for documents that contain either "implied volatility" or just "volatility" use the query:

"implied volatility" volatility

or

"implied volatility" OR volatility

The AND operator matches documents where both terms exist anywhere in the text of a single document. This is equivalent to an intersection using sets. The symbol && can be used in place of the word AND.
To search for documents that contain "implied volatility" and "historical volatility" use the query:

"implied volatility" AND "historical volatility"

The "+" or required operator requires that the term after the "+" symbol exist somewhere in a the field of a single document.
To search for documents that must contain "volatility" and may contain "index" use the query:

+volatility index

The NOT operator excludes documents that contain the term after NOT. This is equivalent to a difference using sets. The symbol ! can be used in place of the word NOT.
To search for documents that contain "implied volatility" but not "historical volatility" use the query:

"implied volatility" NOT "historical volatility"

Note: The NOT operator cannot be used with just one term. For example, the following search will return no results:
NOT "historical volatility"
The "-" or prohibit operator excludes documents that contain the term after the "-" symbol.
To search for documents that contain "implied volatility" but not "historical volatility" use the query:

"implied volatility" -"historical volatility"

Search supports using parentheses to group clauses to form sub queries. This can be very useful if you want to control the boolean logic for a query.
To search for either "implied" or "historical" and "volatility" use the query:

(implied OR historical) AND volatility

This eliminates any confusion and makes sure you that volatility must exist and either term implied or historical may exist.

Fuzzy Searches

Search supports fuzzy searches based on the Levenshtein Distance, or Edit Distance algorithm. To do a fuzzy search use the tilde, "~", symbol at the end of a Single word Term. For example to search for a term similar in spelling to "favourites" use the fuzzy search:

favourites~

This search will find terms like favorites and favourites.

Wildcard Searches

Search supports single and multiple character wildcard searches.
To perform a single character wildcard search use the "?" symbol.
To perform a multiple character wildcard search use the "*" symbol.
The single character wildcard search looks for terms that match that with the single character replaced. For example, to search for "options" you can use the search:

option?

Multiple character wildcard searches looks for 0 or more characters. For example, to search for vola or volatility, you can use the search:

vola*

You can also use the wildcard searches in the middle of a term.

vola*ty


Boosting a Term

Search provides the relevance level of matching documents based on the terms found. To boost a term use the caret, "^", symbol with a boost factor (a number) at the end of the term you are searching. The higher the boost factor, the more relevant the term will be.
Boosting allows you to control the relevance of a document by boosting its term. For example, if you are searching for

implied volatility

and you want the term "implied" to be more relevant boost it using the ^ symbol along with the boost factor next to the term. You would type:

implied^4 volatility

This will make documents with the term implied appear more relevant. You can also boost Phrase Terms as in the example:

"implied volatility"^4 "historical volatility"